Hi Marcelo, I would love others to give their input, but I do have experience. IF can be helpful lowering a diabetic's HbA1c because it allows you to extend the time of good blood sugar that has not been affected by eating.
There is research showing how intermittent fasting may even help the pancreas work more effectively, but most of the research has been done on T2Ds (T1Ds soon to come).
Also, IF can be helpful for weight loss because it can be an easier way to cut down on calories. Breakfast is supposedly the meal when you are most filled (meaning if you ate that exact same meal for dinner, it would be less filling). Therefore, the most effective IF may be done if you ate breakfast and cut off dinner, but just cutting hours of eating in itself will help cut calories for better weight loss (skipping breakfast).
Lastly though, IF is not for everyone. If you find yourself eating more calories with the first meal your break your fast with and throughout the day, then maybe IF isn't the best for you.
Some people can feel deprived and overly hungry with IF, so they actually eat a bit more than they would having split their meals throughout the day.
More often than not though, people tend to be able to cut their calorie intake down with IF. One reason for this is that after about 10 hours after eating, your body switches to using fat for energy rather than glucose (carbs), which allows you not to be as hungry.
A popular time ratio to do IF is 16/8 a day, but you can start with 14/10. Based on research, doing a daily intermittent fast rather than fasting 2 days a week and eating regularly for 5 seems to be a more effective for diabetics.